Icon disambig
For the Fallout 2 creatures sometimes called "aliens", see wanamingo.
Gametitle-FO1Gametitle-FO2Gametitle-FO3Gametitle-FO3 MZGametitle-FNVGametitle-FO4
Gametitle-FO1Gametitle-FO2Gametitle-FO3Gametitle-FO3 MZGametitle-FNVGametitle-FO4Gametitle-FO76Gametitle-FOS

Aliens, known as zetans by pre-War conspiracy theorists,[1] are an extraterrestrial yellowish-green skinned humanoid race from an unknown planet. The only thing known about them is that they use their ability to travel space to probe other planets and species for information.


It is not known from what system and what planet they come from. Orbiting and observing the Earth with two motherships (Zeta and an unnamed one) at least since the 1600s in the Solar System, humans had no real awareness and no evidence of their existence. Before the 1960s, they were only believed by "crackpot" groups such as Quaere Verum, that believed in the existence of aliens and that they were being covered up by a government conspiracy.

But after the mysterious disappearance, or rather abduction, of the USSA space capsule Clarabella 7 and the pilot astronaut Colonel Colonel Hartigan during the 1960s Space Race, the existence of aliens became nationally recognized. It is said that alien technology was the basis of many of the Enclave's more exotic and impressive weaponry and robotics.[2] Even toy manufacturers such as Wilson Automatoys weren't immune to these accusations[2] and the United States government, which was said to keep its alien specimens and technology mostly in Area 51 (like a flying saucer that was later recaptured by aliens but crashed in California, instantly killing the two pilots).

The Brotherhood of Steel[3] around 2161 and the Shi[4] around 2241 encountered the bodies of aliens or their spaceships. By extension, the Capital Wasteland Brotherhood of Steel have a moderate amount of alien power cells kept in the Citadel's armory[5] and the Brotherhood Outcasts also have some alien power cells at Fort Independence. Also before 2277, an alien body was discovered in Fort Bannister,[2] probably by the Enclave, carrying what may have been recovered (like an alien blaster and some alien power cells) in the armory of the mobile base crawler at Adams Air Force Base.

Some of the advanced human technologies were created by using the alien technology like the AI project number 59234: Skynet,[6] created in the 2050s who manages the entire Sierra Army Depot, as well as the device blocking telepathic and psychic commands, the allegedly alien psychic nullifier.[7]


Aliens are diminutive, hairless, yellowish-green-skinned humanoids with short, wiry limbs and green blood. Their heads are disproportionately large, with round, heavy-lidded, solid black eyeballs with no discernible iris or pupil; a thin, toothless mouth with green tongue, and two pairs of small holes where ears and nostrils would be. Aliens have no opposable thumbs, each hand having three long, tentacle-like fingers with large suction cups at each fingertip that allow them to manipulate objects. They breathe a similar atmosphere to humans, and (at least those on Mothership Zeta) subsist mainly on a diet of strange alien worms and squid.


They seem to have a strict society focused on work and progress, with no apparent concern for hobbies or personal pursuits. Their architecture is spartan and purely functional: for instance, their bed (called a stasis chamber) is a sterile metal capsule with no mattress, blankets, sheets, or other pieces of bedclothes typically found in a normal human bed. Also, no discernible means of entertainment can be seen aboard Zeta. However, the aliens, in their own right, appear to have some degree of emotion, since alien workers display obvious fear when confronted with armed assailants. In another case, the aliens are shown to have an unusual fascination with Giddyup Buttercup, as demonstrated in a captive recorded log onboard Zeta, of Sally being taken to the recording room and noticing a Giddyup Buttercup. She notes that upon her calling attention to it, the aliens become very excited, though she has no idea why they act this way.

They view other species as laboratory animals, worthy of preservation and storage at best and vivisection and experimentation at worst. They speak in their own language of high-pitched screeches and wails. As such, communication between humans and aliens is supposedly impossible. However, linguistics specialist Holly Barrisford did make an attempt to communicate with the aliens during her abduction. Unfortunately, barring recording some brief biographical information, the aliens simply aren't interested in discussion.

They are incredibly advanced in their various technological fields, capable of spaceflight and technological feats equal to, and often beyond, that of even the most advanced human pre-War technology. They also possess technologies such as long-term cryostasis, powerful rayguns, genetic manipulation, teleportation and holograms. However, they are totally dependent on technology. Because of this, they are physically fragile, lacking in raw strength and ineffective in melee-based combat. Very few possess especially protective armor and clothing.

Aliens typically wear spacesuits, the color of the suit apparently indicating rank, and soldiers generally carry shock batons, disintegrators and atomizers. They prefer to attack their foes in large numbers and tend to have guardian drones with them.


Perk wild wastelandThe following is based on the Wild Wasteland trait and has not been confirmed by canon sources.
Perk wild wastelandEnd of information based on the Wild Wasteland trait.
  • In Fallout 4, the Sole Survivor can encounter an alien spaceship falling from the sky shortly after reaching level 20. Companions have unique commentary upon observing the crash. The crashed UFO is always located east of Oberland station. Following green bloodstains will lead the Sole Survivor to a hostile injured alien which can be looted for the alien blaster pistol. Animatronic aliens can also be found in Nuka World, modeled after zetans and utilizing their alien blaster weapon for lethal and non-lethal purposes. Fallout 4 also officially identifies the aliens as zetans through various in-game sources.
Creation Club logoThe following is based on Creation Club content and has not been confirmed by canon sources.
  • In the Creation Club quest Over the Moon, the Sole Survivor encounters a second alien craft abducting a brahmin, along with two hostile aliens with unique weapons.
Creation Club logoEnd of information based on Creation Club content.

Crashed shipsEdit

Six alien ships are known to have crashed in the United States:

  • A flying saucer in a special encounter in California. (Fallout)
  • A recon craft named Theta in the Capital Wasteland. (Fallout 3)
  • Another recon craft that crashed and exploded on contact with the ground in a random encounter near the Lone Wanderer in the Capital Wasteland. (Fallout 3)
  • At the Citadel, there is information on a terminal (in the A-Ring) about another ship of unknown type codenamed "Palandine" that crashed in a heavily wooded area near Hagerstown, Maryland which the government was not able to reach. (Fallout 3)
Perk wild wastelandThe following is based on the Wild Wasteland trait and has not been confirmed by canon sources.
Perk wild wastelandEnd of information based on the Wild Wasteland trait.



Robots and computersEdit


  • Flying saucer Gametitle-FO1 - Small ship with a saucer-shaped body used for fast operations that houses two pilots. The only known flying saucer is the one that crashed in California.
  • Mothership Gametitle-FO3 MZ - Large ship dedicated to long-term space travel and the study of other species. It's generally located in space. It houses a large crew of aliens and is commanded by a captain. The overall shape of the ship resembles a colossal saucer with another small disc-shaped section attached to the bottom. Known motherships are Zeta and the unnamed mothership which arrives after Zeta's bridge is captured by the Lone Wanderer.
  • Recon craft Gametitle-FO3 Gametitle-FNV - Small ship with a disc-shaped rear body used for stealth operations that houses only one pilot. Known recon craft is Theta, another which exploded and sprayed in the Firelance event, and a possible unnamed craft in the Mojave Wasteland.


  • Abominations Gametitle-FO3 MZ - Biological weapons created from humans with alien DNA.
  • Alien biogel Gametitle-FO3 MZ - Ingestible curative gelatin-like liquid which accelerates organic tissue's regeneration processes.
  • Healing archway Gametitle-FO3 MZ - Care generator restoring health, removing all radiation, clearing any drug addiction and restoring crippled limbs.


Other devicesEdit



Fallout 3Edit

Fallout: New VegasEdit

Fallout 4Edit

Fallout 76Edit


  • Killing alien workers in the Fallout 3 add-on Mothership Zeta will give bad Karma, probably because they are classified as civilians.
  • The creatures that are known as wanamingos are referred to as aliens, but are actually the result of genetic engineering via the Forced Evolutionary Virus by humans and have nothing to do with aliens.
  • The Lone Wanderer is the only protagonist so far to have been abducted by the aliens.


In Fallout and Fallout 2, they only appear in the form of skeletons. The crashed recon craft Theta appears in Fallout 3 with the first dead alien, and the aliens are the primary antagonists of the Fallout 3 add-on Mothership Zeta. They also make an appearance in Fallout: New Vegas if the Wild Wasteland trait is active. If this is the case, then they are spotted in the northernmost part of the map near Brooks tumbleweed ranch. In Fallout 4 they appear during an event in which a UFO crashes to the ground south of the Beantown Brewery in the Commonwealth. In Fallout Shelter they appear during the quest Humans Like Us, where they use optical camouflage to look like male human beings.

Behind the scenesEdit

50 Vault-Tec C.E.O.The following is based on unverified behind the scenes information and has not been confirmed by canon sources.

The aliens resemble greys, beings commonly described in alien abduction accounts. These aliens have been commonly reported since the 1950s. Later, the Greys became more mainstream when science fiction began depicting them. These kinds of aliens have come to represent the "stereotypical" alien. The name zetan may refer to the star system Zeta Reticuli,[8] a real-world star system seen in a number of science fiction stories,[9] such as the Alien franchise. It was also rumored to be the origin of the aliens[10] who allegedly abducted Barney and Betty Hill in 1961, which was the first widely publicized report of alien abduction.[11]

50 Vault-Tec C.E.O.End of information based on unverified behind the scenes information.



  1. Fallout 4 loading screens: "If the conspiracy theorists are to be believed, Earth has been visited by an alien species on several occasions. These "Zetans" are said to be armed with powerful energy beam weapons that can completely disintegrate enemies."
  2. 2.0 2.1 2.2 Fallout 3 Official Game Guide Game of the Year Edition p.45: "Aliens
    Once thought to be covered up by a government conspiracy and believed only by "crackpot" groups such as the Quaere Verum, evidence of extraterrestrial life can be traced back throughout human history, but became nationally recognized after the mysterious disappearance of the Clarabella 7 space pod during the 1960s Space Race. It is said that Alien technology was the basis of many of the Enclave's more exotic and impressive weaponry and robotics, and even toy manufacturers such as Wilson Automatoys weren't immune to these accusations. Recently, after the discovery of an Alien body in Fort Bannister, the shocking truth was revealed. The Aliens are not only real and alive, but they’re back. And they're pissed."
    (Fallout 3 Official Game Guide faction profiles)
  3. Scribe: "{111}{}{I've seen an alien space ship before.}"
  4. The Chosen One: "{176}{}{Xeno program.}"
    Shi Emperor: "{182}{}{"The subject on which we had hoped to establish a series of meaningful experiments has disappeared, presumed either destroyed or stolen by the Hubologists. Further inquiries have proven fruitless. Until such time as further specimens are obtained, this database will remain inoperative." - Dr. Sheng}"
  5. Seen if the player character chooses to destroy the Citadel during Who Dares Wins in Broken Steel add-on of Fallout 3
  6. Skynet: "{207}{}{Skynet was conceived and developed in the year 2050. Through the use of alien technology a new thinking computer was perfected. In the year 2081, Skynet became self-aware. In 2120 Skynet was given a new set of instructions and then abandoned by the Makers.}"
  7. Fallout Official Survival Guide p.128: "Psychic Nullifier: A strange device, possibly the product of an alien technology. It blocks telepathic or psychic commands."
    Note: The game itself does not state anything of the sort.
  8. Zeta Reticuli on Wikipedia
  9. Zeta Reticuli in Fiction on Wikipedia
  10. The Hill Starmap on Wikipedia
  11. The Hill Abduction on Wikipedia
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